noun
- plural of demantoid; green garnets with high brilliance and fire, prized as gemstones
Usage: gemology; mineralogy
Examples
- The jewelry collection featured several rare demantoids from Russia.
- Demantoids are among the most valuable types of garnet.
- The gemologist identified the stones as high-quality demantoids.
- Antique Russian demantoids command premium prices at auction.
- The ring was set with three brilliant demantoids and diamonds.
- Collectors prize demantoids for their exceptional fire and luster.